The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2017
Filed:
Jun. 20, 2011
Hiroi Nagasawa, Susono, JP;
Hiroi Nagasawa, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
This invention relates to a control device for internal combustion engine for performing an exhaust recirculation control for controlling an operation condition of an exhaust recirculation device () according to a target exhaust gas recirculation amount (TRegr) set such that a detected air-fuel ratio (AFd) corresponds to an estimated air-fuel ratio (AFe). When the sign of the ratio (Rtregr) of the change amount of the actual target exhaust gas recirculation amount relative to the change amount of the base exhaust gas recirculation amount setting parameter (Q) used for the setting of the base exhaust gas recirculation amount (Regrb) is different from that of the ratio of the change amount of the referential target exhaust gas recirculation amount relative to the change amount of the base exhaust gas recirculation amount setting parameter, the performance of the learning function to calculate the learned correction value (KGn) on the basis of the instant correction value (KT) for correcting the current target exhaust gas recirculation amount such that the air-fuel ratio deviation (Raf) becomes zero is forbidden.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile